The morning fart that signals you are awake and can get out of bed.
It must be resoundingly loud and the 'p' at the end is the noise of your bum hole finally shutting.
To qualify it must also be as dry as a sahara wind.

anagram for "potheads with a purpose." refers to marijuana smokers who make a habit of going on madcap adventures after smoking. Possible activities include: organizing a scavanger hunt, driving into the city, going to the library, running numbers at a local grocery store, glamour bombing, breaking into vacant commercial spaces and organizing a sort of club-house, people watching at your town square, hiking through your favorite forest reserve. You get the idea.